Development of 1×7-15.2 mm steel strand for wind power external cables
Improving corrosion resistance of external prestressing cable is one of the most important techniques to improve life of external prestressing system.Development objective of steel strand for external cable is given.Product development process of HDPE tightly wrapped smooth steel strand with low grease content is discussed.Average thickness of sheath of developed steel strand for external cable reaches 1.86 mm and average grease content reaches 32.3 g/m.The appearance and properties indexes of steel strand meet requirements of Technical Conditions of Steel Strand for External Cable for Wind Power.
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